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Grit Blasting and Shot Blasting Machines Prepare Excellent Metal Finish
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Posted: Oct 28, 2018
The painted iron lattice at the house entrance looks bold and beautiful. Certainly, it is so because it is protected from water and the environment. But everything has a life and so does the emulsion. When the paint starts to chip off, it will expose the lattice and give it rust. Metals are prone to become dark, iron is exposed to rusting and brass too gets dull over the years. It will require scratching the paint off and repaint the whole structure to its life again.
Treating a complex metal structure will obviously take time and energy because the small brackets and designs in any form like a mesh or lattice require scrupulous attention and a whole length of manual labor to incessantly scrape up the paint surface by repetitive finger movements with an emery paper.
Uses of grit blasting and shot blasting
Forget the olden days when this scenario was prevalent. To give appealing forms to all sorts of metals including glass, steel and iron, shot and grit blasting is the buzz word. With the use of compressive force, technology has invented a new idea of cleaning by abrasion. In this method, an abrasive media is accelerated at high speeds from a blast nozzle by compressed air onto the surface to remove dirt, grit, oils or simply chisel off old coatings of dried paint of the letterbox.
Grit Blasting is somewhat of a rugged form of sandblasting because here the media is of unequal size and length. It could be hard steel grits or softer abrasives like walnut shells. Different media types have different uses and intensity. So the selection of media is of prime importance. Grit blasting is basically done to remove rust and prepare surface for high performance paint application. It is also made to give surface a clean, matte look to the metal.
Types of blasting media used in Grit and Shot blasting:
We use different types of abrasives in the grit and shot blasting machine process. Hard ones include aluminum oxide, a sharp media for harsh cutting and metal cleaning, glass etching and stone lettering. Glass beads offer softer tone to surface and good for peening, correcting imperfections in layer, gives matte look to softer metals like brass, bronze and aluminum. Walnut shells pumice and corn cobs are good for wooden areas while acrylic plastic is commonly used for ultra-sensitive surfaces to get gentle stripping off metal sheets of cars, aero planes, marine vessels, etc. Melamine Plastic is again for solid surface while Silicon Carbide Grit is used on thick metals like car parts, bulletproof jackets, etc.
Just like grit blasting, we can clean surface and correct imperfections using shots. The only difference is that the shots are round and proportionate in size. Shots give exceptional cleaning and prepare metal for painting. In shot blasting, peening is also undertaken to give outstanding strength to particular mechanical parts of equipment like metal springs, to improve their shelf life and resistance. However, shot blasting is widely used for metal cleaning and it gives a new sheen to the surface for protective coating of paint, galvanizing and metal spraying.
Indeed, both shot blasting and grit blasting are the frugal processes for undertaking faster, reliable and satisfactory cleaning task on all metals.
About the Author
We are the largest shot blasting machine manufacturers in Faridabad,India. Get the Shot blasting machine @ best prices & unmatched services. Call us @ 9811083740.
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